Drawbot: checking out the competition

• Drawbot: No pen up.  Not self-calibrating.  Interesting path planning (circular halftones?).  Very slow.
• Hektor: Pen up.  Spray paint plotter.  Self calibrating.  Terrible path planning.
• Smooth Octopus: Pen up.  Nice plotter.  Not self-calibrating.  Java path planning.
• GarabatoBot: No pen up.  Nice plotter (motors integrated!).  Not self-calibrating.
• http://www.as220.org/labs/drawbot/
• http://www.muralizer.com/blog/
• http://www.unanything.com/

Do you know of any others?  Please comment!